Hierarchy classification:

1. top of the aat hierarchies
2. Objects Facet
3. Visual and Verbal Communication (hierarchy name)
4. Information Forms (hierarchy name)
5. information forms (objects)
6. information artifacts
7. [information artifacts by function]
8. identifying artifacts
9. identification numbers and codes
10. identification numbers

Additional parents:

1. top of the aat hierarchies
2. Objects Facet
3. Visual and Verbal Communication
4. Information Forms
5. information forms
6. document genres
7. documents by function
8. identifying markings and symbols
9. marks
10. marks by function

Anotations

Scope note:

Numeric, alphanumeric, or other identifying codes assigned when an art object, book, or other item is described or listed in a catalog, usually a published catalog. An example is an exhibition catalog. The numbers are typically not marked on the object itself. For numbers given to objects when they are acquired by a repository, prefer "accession numbers."